Machine for biasing cloth.



. remainingv parallel to each other are atan means of two series of interconnectedY gripz5-'pers adapted to grip the edges of a web of Into an inclined or Iangular position; the

fportin'g at one lside two vertical` pulleys jor 'threads, but'remain permanently in an'inouter run should have such a movement.

UNITED sTATEs PATENT OFFICE.

FRANCISQUE VOLAND ALBERT SIGNORS TO R. DE MONTLORD, OF NEW YORK, N

MARCHAND, oF LYON, FRANCE, As-

MACHINE FOR BIASING CLOTH.-

Specification of Letters Patent.

Application filed October 26, 1905. Seiial No. 284,504.`

To all whom it may concern:

Be it known that we, FRANoIsQUE VOLAND i and ALBERT MARCHAND, citizens of the French Republic, both residing at Lyon, France, have invented certain new and useful Improvements in Machines for Biasing tion. 1 In certain machines for tentering or otherwise treating fabrics the weft-threads are temporarily displaced in such a manner that they are inclined with regard to the warpthreads. fm 1 The present invention relates to ap aratus for the purpose of obtaining a new fabric the weft-threads of which are not only temporarily inclined with regard- -to the warpclined or oblique direction, so thata fabric is obtained all the wetthreads ofl which while angle other'than ninety degrees with regard to the warp-threads. This is effected by woven fabric, the said series of grippers forming, yas it were, twoendless conveyerchains which are caused to travel insuch a manner that one of them is retarded :with regard to the other in its movement between two given points. By this means the weftthreads wlnch were originally at right angles with regard to the Warp-threads are drawn Width of the web being, of course, at the same time reduced. j j

The invention is illustrated in the annexed drawings, inwhich- 'l Figure 1 is a diagrammatic lan view of the ap aratus.V Figs. 2 lto 7 ustrate two metho s for interconnecting the grippers referred to. v Thefapparatus comprises a frame A', supguide-rollers l and 2, around which asses an endless chain consisting of a series of ippers which will be described hereinafter. the construction shown both the inner and outer runs of said gripper-chain move in a straight line; but it is not essential that the The apparatus also comprises a frame B, sup-1:YV portin guide-rollers 3, 4, 5, 6, 7, and 8. AT5- grippers belonging to the two en A referred to. The distance between m and o` third ame C is transversely displaceable with regard to the frames A and B and supports two guide-rollers 9.and 10.

The frames A and B are adapted to be moved toward each` other or apart while remainmg parallel, this displacement being own' means-for instance. by

meansl of an adjusting-screw s.

effected by kn This arran ement allows of using the machine for clot webs of various widths.

In the form vof'construction illustrated an endless chain,`which is similar to the one already referred to and the path of which Ais indicated in Fig. 1 by lines connecting the points o, p, g, r, and o, passes over the rollers l y 3, 4,- 5, 6, :7, 8, 9 and 10. The rollers 3 4 ar p arranged 1n suc amanner that the direction of the chain between o and p is parallel to the direction of the chain extending from m to n between the rollers 1 and 2. The-rollers 9 v and l0 on the frame C are arrangedin such a manner that the line connecting Q and r is also parallel to the path m n. I

he rollers 5,6, and 7 are arran ed on the frame Bin slots. and are ad'ustab e'with respect to the other guide-ro ers, so v that Ythe flength'of the sinuous or zigzag chain ath or run betweenv and g can be increas 'or reduced at The length of the inner or gripping lrun of the last-named chain is al- .ways substantially greater than that of the inner run 'of the other chain, though the distances traversed by said gripping-runs of the chains in the direction of movementof the cloth are the same. The roller 8, which vis also arranged in a slot on the frame B, is a tensioning-roller, which allows of taking up the left-hand side of the rollers 3 and 10.

R is a beam or roller jom which, the web of fabric to be treated is unwound, and'R is an analogous beam or roller on which the said web is wound up after the weft-threads have been drawn into the inclined or diagonal position desired.

At in and o the "fabric is engagad byg t wo ess c ams right (of the drawing) to p and p', the linear velocity of the two chains being equ l. Beyond the point p, however, the pat of the the slack in the return-path ofthe chain on too chain on the lett-hand side ot Fig. 1 becomes l saine vertical plane as the straight line which lsinuous, so that when the gripper on the left hand side has reached q the correspoinling gripper on the right-hand side is already at m, the chain-path m 'm7 on the rightfhand side being equal to the sinuous chain-path 0 p g Moreover, m q is equal to fm. o, since the length of the wett-threads does not vary. It is obvious that by this means the web is distorted, the weit-threads being` drawn into a diagonal or inclined position with regard to the warp-threads, which latter remain parallel to the line 'm a. The purpose ol the apparatus is thus achieved. Beyond m and q the paths o'l the two grippers are parallel, so that no Jfurther displacement ot the wettthreads takes place, but the latter remain iii-- clined with regard to the warpthreads At .n 'and r the grippers are caused by known means to release the fabric, and the 'latter is thereupon Wound upon the roller it.

The a para'tus` is regulable for various Widths oipweb and for. cliferent angle oi inclinationto be imparted to 'the wett-threads. Given a web of a certain original width L, the edges of the said web are gripped at m and o, 'So that the distance m 0 is equal to the width L. This 'is eiiectecl by adjusting the trarne A'wth regard to the traine B. if a is the Iangle :of inclination to be limparted to the weft and L the Width of the web with ins clined lweft-threa`ds, then L L cos. o. L being known, it is suiiicient to adjust the frame iC solthat n r is equal to L. vlt is known that fm p is equal to the sinuous 'chainpath ,n q, and it is obvious that q m represents the difference between the length of the sinuous 'path p gend the projection p q of the latter on the line m n. The length. of q m varies according to the Width et the fabric and the angle of inclination to be imparted to the weft-threads, butis equal to L sin. e.. For each apparatus constructed a table een there forebe yprepared stating the values L and g im. for any given width oi" web and angle oi inclination. it is therefore in each case only "necessary to adjust the guide-rollers 5, 6, and 7 in such a manner that the length ol" the sinuous chain-path is of a certain known value` The rollers 2 :and 10 are provided with "teeth adapted to drive the gripper-chains, the said rollers being ofequal diameter and revolving with equalvelocity, so that theyY impart equal linear movement, to the twol Since the gripper-s traversing the sinuous path are alternately on the rightehand and left-hand sides olt the respective guide-rollers, it is csseutiaithat ,thopivotal axes about which, the grippers rotate `should be in the connects the points at which'the fabric is v gripped before the lgrippers enter the sinuous path. ll this'were not the ease, the fabric would be .liable to be torn during the passage of the grippers through the sinuous path. Figs. 2 to 7 oi the annexed drawings illustrate two methods 'for interconnecting the grip-v pers in such a manner that the desired eil'ect is obtained. The niore simple method is illustrated in Figs. 5 to?. grippers D are provided with lugs E, in which holes are inade, so that the grippers can be pvotallyinterconnect@l by means of pins H. The longitudinal axes Z Y of the latter are in the saine 'vertical plane as the line Z Y, which eonneets the operative parts of the grippers D when said grippers are v-in ya straight line, each axis Z Y being, 1nore over, situated midway between two grippers.

in the construction shown in Figs. 2 to 4 each gripper is provided with a lateral plate G, adapted to support the next gripper in the series, an arcuate slot F being formed in said plate about a center K, situated mid-way between the two grippers. A downward projection T of suitable cross-section extends rom the supported 'gripper through said slot and is ylwrizontally slidable in fthe latter. The lower ends of theprojections T are adapted to be engaged by the teeth by means of 'which the chain or series of grippers is moved.

it is obvious that the apparatus cannot only be used 'for transforiningl rectangular texture into diagonal texture, but also i'or the opposite purposc-vthat is to say, l'or transforming diagonal texture into'rectxuigular texture. It can also serve Jfor imparting a'greater or smaller degree ot inclination to Weit-threads which are already inclined with regard to the wauw-threads ol the fabric.

The endless chain ot erippers which passes over the rollers l and 2 need not necessarily travel'in straight lines from one oit the said 'rollers 'to'the other, but there vmust be inequality between the projections of the tw'o chnin-pathsat opposite sides oithe web.

l'lihat we claim isv l; in a machine for biasing eloth, coperating gripper-chains the grip' )inoportions of' which are ot different lengths ut traverse the same distance in the direction of rnovement oli the cloth.

2. lu a machine for biasing cloth, coperating endless gripper-chains the gripping-runs ln this the XID of which are of different lengths thoufrh travw ersiug the same distance in a longitudinal directiou` f ln a machine for biasing clotl1,ooperatin@ grippcr-chains the gripping -runs of W'iich are ot different lengths thonglrtraversing the same distance in longitudinal direction, one ol' seid gripping-runs being partially sinuous.

posed throughout its length in a right line,

, fand a secondgripper-chain, to cooperate with the irst, having a gripping portion -f which initially moves in a right line and then sinuously.

.6. In af'inachine for biasing cloth, a gripper-cham the gripping-run of which lies in a right line throughout its length, and a coperating gripper-chain having a gripping-run Vone end portion of which lies in. a right line parallel to said irst-named gripping-run, and which is sinuons interinediately of its length.

7. In a machine forbiasing cloth, coperating gripper-chains and means to drive said chainsso that their gripping portions move at different speeds in the direction of movement of the cloth.

, 8, The combination, with 'coperating gripper-chains the gripping portions of which are of different lengths but traverse the same distance in the direction of movement of the cloth, of means to drive said chains-so that their gripping portions move in such direction at diiferent speeds. i

9. In a machine for biasing cloth, gripperchains, and means to drive said chains so that their cooperating gripping portions, duringl a part only oli' .their movement, move at different speeds in the direction in which the cloth is moved.

l0. 'l`he combination'of two cooperatingv gripper-chains, and means to drive said chains so that their gripping portions move vat the same speed in the direction ol movement of the cloth during the initial part of their movement and then move at dillieient speeds in such direction,

l1. The combination of two cooperating gripper-chains of which the gripping portion of one is partially parallel with that ol the other and partially out of parallelism therewith, and means to drive said chains so that the gripping portions thereofvvhen parallel nieve at the saine speed in the direction ol movement ot' the cloth, and move at different speeds'hin such direction when out oll parallelism.

l2. ln a machine for biasing cloth., a gripper-chain having a straight gripping portion, l

a gripper-chain having a sihnnons gripping portion lo cooperate with said straight porlion, and mechanism lor driving said chains i so that said sinuons gripping portion moves in the. direction ol' movementv ol' the. cloth at a slower rate than said straight portion.

13. In a machine for biasing cloth, an endless gripper-chain having its gripping portion throughout movable in a straight line, and a secondendless gripper-chain the gripping portion of which is movable partly in parallelism andI artly out o 'r' parallelism with said first-name portion.

14. In a cle` til-biasing machine, an endless gripper-chain the gripping-run of which lies.

in a straight line throughout the length of the. same, and a second endless gripper-chain the gripping-rn of which is partially sinuous or zigzag, sai gripping-runs extending'th'e same distance inthe direction of movement of the cloth.

, 15. In a cloth-biasing machine, a gripperchain having .a straight gripping-run, and a second gripper-chain having a gripping-run of variable sinuosity.

16. In a machine for biasing cloth, a gripper-chain having a straight gripping-run, and a second gripper-chain, movable over rollers Which are so disposed as to impart a sinuous run to said last-named chain, said rollers being adjustable to vary 'the sinugity of said run. f. A

17. In a cloth-biasing machine, the combination of a frame, an endless gripper-chain arranged longitudinally of said frame at one side thereof .and having a straight grippingrun, a second gripper-chain at the other si e of the machine, and rollers over which the intermediate portion of tue grippin f-riin of the last-named chain travels; sai rollers imparting a zigzag movement to such run and being `adjustable transversely of said frame.

18. In a machine for giving an oblique lie to the weft of a cloth web, the combination of two main frames adjustable toward and away from each other, an auxiliary :trame adjustable in the same direction upon .one of said frames, an endless gripper-chain mounted on one of said main frames and having a straight inner run, rollers mounted on said auxiliary lrainphrollers mounted on theotlier main frame; and a gripper-chain guided by all of said rollers, those on said auxiliary iraniegniding said last-named gripper-chain so that a portion of its inner' run is parallel to the inner run ol' said first-named chain, and the rollers on the other main frame being so disposed as to impart a zigzag movement to another )ortion ol' the inner run of said last-- named cliain.

' ln witness whereol'iwe have signed this specification in the presence oll two witnesses.

` t lil'tANClSQllll VOLAND.

Alillllt'l MARCHAND. Wi triessos:

Manin' VixoiioN, IAUL Vitrine.

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